Improvement in scaffolds



- UNITED STATES PATENT QFFICE.

FRANKLIN II. D. NEWVHARD, OF I-IOKENDAUQUA, PENNSYLVANIA.

IMPROVEMENT IN SCAFFOLDS.

Specification forming part of Letters Patent N0. 153,270, dated July'21, 1874; application filed April 11, 1874.

To all whom it may concern:

Be it known that I, FRANKLIN-H. D. NEW- HARD, of Hokendauqua, in thecounty of Lehigh and State of Pennsylvania, have invented a new anduseful Improvement in Scaffold, of which the following is aspecification:

Figure l is a top view of my improved sca f fold arranged for insidework. Fig. 2 is a side view of the same. Fig. 3 is an end view of thesame.

Similar letters of reference indicate corresponding parts.

The invention will first be fully described, and then pointed out in theclaim.

I will describe the scaffold as erected for inside work.

A are four posts, each pair of which are connected by two inclined ordiagonal braces, B, which cross each other in the center of the spacebetween said posts A, and have hookbolts b attached to their ends, tohook into eyebolts a, attached to the posts A. The inclined braces 13are made in two parts, which overlap each other, and to one of saidparts is attached a keeper, 0', as shown in Fig. 2, through which theother part passes. The parts of the braces B are secured to each other,when adjusted, by a set-screw, D The posts are further connected at thesides of the scafi'old by the bars 0 D. The lower ends of the inclinedbars 0 are beveled to fit against the posts A, with which they areconnected by dowel-pins attached to said beveled ends, and which enterholes in said posts. The upper ends of the bars 0 are beveled to fitagainst each other, and are connected by a dowel-pin attached to one ofsaid ends and entering a hole in the other. The outer ends of thehorizontalvbars I) are provided with hook-bolts d, which hook intoeyebolts a, attached to the posts A. The inner ends of the bars I) arebeveled, to fit upon the inclined bars 0, where they are secured inplace by dowel-pins attached to said bars D, and which enter holes inthe said bars 0. The connection between the bars 0 D and bars G andposts A may be further secured by hooks and eyes, as shown in Fig. 2. Eare bars, the inner ends of which are provided with books 0, to hookinto eyebolts a, attached to the posts A. The bars E are supported in ahorizontal position by inclined braces F, the upper ends of which areframed into the said bars E. The lower ends of the braces F are beveledto fit against the posts A. Any desired number of the brackets E F maybe attached to the posts A, to support fioorings at differentelevations, as shown in Fig. 2.

lVhen the soaifold is to be used for outside work, only one side of thescaffold is used. In this case the posts are supported in an erectposition by the bars G, the ends of which are provided with hooks g tohook into eyebolt-s a, attached to the posts A. The other ends of thebars Gr rest against the side of the building.

If desired, for greater security, the ends of the bars G may be providedwith hook-bolts 9 to hook into eyebolts attached to the building; butthis will seldom be necessary.

Having thus described my invention, I claim as new and desire to secureby Letters Patent--- A scaffold consisting of four posts, A, connectedby two-part oblique braces B B, V-bars O (l, and horizontal bars D D,constructed, arranged, and detachably put together, substantially asshown and described.

FRANKLIN H. l). NEWHARI). lVitnesses:

HENRY HARTMAN, SAMUEL (3. MILLER.

